Servo improvement suggestions
Most servos are still made for radio controlled models not for building robots. If you want to mount servos in a different way, you need to buy or build brackets and if you need to build a pan/tilt unit or a robot arm joint etc., you need to buy or build special brackets too. Dear vendors, how nice it would be if we would have at least a cheap standard servo like shown below. Just two little new toolings...
The M3 thread on the reinforced bottom side can be used for mounting purposes (maybe a second one can be added) or you can screw in a M3 screw and use this screw as an axle extension for the servo horn shaft (easy pan/tilt construction, you only need a U-shaped mounting bracket).
Some application examples: